Improved Performance of Printable Perovskite Solar Cells with Bifunctional Conjugated Organic Molecule
作者:Yue Hu、Zhihui Zhang、Anyi Mei、Youyu Jiang、Xiaomeng Hou、Qifei Wang、Kai Du、Yaoguang Rong、Yinhua Zhou、Gengzhao Xu、Hongwei Han
DOI:10.1002/adma.201705786
日期:2018.3
A bifunctional conjugated organic molecule 4‐(aminomethyl) benzoic acid hydroiodide (AB) is designed and employed as an organic cation in organic–inorganic halide perovskite materials. Compared with the monofunctional cation benzylamine hydroiodide (BA) and the nonconjugated bifunctional organic molecule 5‐ammonium valeric acid, devices based on AB‐MAPbI3 show a good stability and a superior power
设计了一种双功能共轭有机分子4-(氨基甲基)苯甲酸氢碘化物(AB),并将其用作有机-无机卤化物钙钛矿材料中的有机阳离子。与单功能阳离子苄胺氢碘化物(BA)和非共轭双功能有机分子5-铵戊酸相比,基于AB-MAPbI 3的器件显示出良好的稳定性和15.6%的出色功率转换效率,短路电流为23.4毫安厘米-2,开路电压为0.94 V,填充系数为0.71。双功能共轭阳离子不仅有利于钙钛矿晶体在中孔网络中的生长,而且有利于电荷传输。这项研究有助于探索钙钛矿材料新型有机阳离子合理设计的新方法。